Which drainage basin is the largest in canada

Like this post? Please share to your friends:. Related articles. Which country has the lowest cost of living in the world? Windhoek, Namibia. Zurich, Paris and Hong Kong tied for the most expensive city, according to the. For the fourth year in a row, Switzerland is considered the No. They prefer shallow coastal water, which means they can often come into contact with.

The great white is the most dangerous shark with a recorded unprovoked attacks. The Nelson and Churchill rivers are sites of large hydroelectric-power generating facilities. The North and South Saskatchewan river system is important to agriculture since it flows through a region of fertile soils limited in their productivity by uncertain rainfall. The water supply from the Bow, Oldman, North and South Saskatchewan rivers and their tributaries is vital to cities, towns and industries of Alberta and Saskatchewan.

The high variability of local tributary flow has necessitated construction of many dams to provide carry-over storage from years of abundant flow to years of low discharge.

There are at least 15 individual watersheds of 30, km 2 or more in area. The region, part of the Canadian Shield , consists of massive ancient crystalline rocks. As a result of glaciation there are large areas of lakes, ponds and swamps.

In some parts as much as 15 per cent of the drainage area is covered by fresh water. The many lakes result in fairly uniform rates of river flow throughout the year. The waters are generally of good quality and minimally influenced by human activities. Although the rivers and lakes are ice-covered annually for six months, water continues to flow under the ice.

The lowest flows occur in March for the more southerly streams, April for those draining into Ungava Bay. There is considerable hydroelectric potential in the region. For example, the James Bay Project is one of the largest in the world. This basin is dominated by the Great Lakes, covering , km 2. Most of the land drainage from the Canadian portion is from the Canadian Shield ; the St Lawrence Lowlands make a small contribution. Most streams in the lowlands are less than km long. They are important for industry, agriculture and urban water supply, and provide recreational opportunities for the region's urban population.

The intensive land use in the southern parts of the basin results in high variability of seasonal flows, localized flooding, periodic low summer flows and impaired water quality. The St Lawrence Basin is the most southerly in Canada. However, many sub-watersheds in the northern portion of the system did not meet our data standards for the bug and fish metrics.

Fortunately, a number of monitoring and restoration initiatives are currently being undertaken by dynamic organizations and citizens groups throughout the Mackenzie basin.

The Northwest Territories government, for example, has recently initiated an ambitious community-based monitoring program, in which local populations are actively being engaged in the monitoring of local water resources. WWF is collecting postal codes so we can send you news and invitations most relevant to your area.

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